EP 0058333 B1 19840620 - PROCESS FOR PREPARING NITRILES FROM FORMAMIDES
Title (en)
PROCESS FOR PREPARING NITRILES FROM FORMAMIDES
Publication
Application
Priority
DE 3105452 A 19810214
Abstract (en)
[origin: US4419297A] Aliphatic, araliphatic or aromatic nitriles of the formula R-CN are obtained by reacting N-substituted formamides of the formula R-NHCHO with at least the stoichiometric quantity of an acylating agent (generally a carboxylic acid anhydride, such as acetic anhydride, or ketene) in the gas phase at temperatures above 250 DEG C., without using a catalyst. The process is especially useful in the preparation of nitriles wherein the connecting carbon of R is a tertiary carbon atom. The nitriles are important intermediate products, for example for the preparation of herbicides, surface-active agents and anti-corrosive agents.
IPC 1-7
IPC 8 full level
C07C 255/03 (2006.01); A01N 43/64 (2006.01); C07C 67/00 (2006.01); C07C 253/00 (2006.01); C07C 253/06 (2006.01); C07C 255/02 (2006.01); C07C 255/06 (2006.01); C07C 255/32 (2006.01); C07C 255/33 (2006.01); C07C 255/49 (2006.01); C07C 255/50 (2006.01)
IPC 8 main group level
C07C (2006.01)
CPC (source: EP US)
C07C 253/20 (2013.01 - EP US)
Designated contracting state (EPC)
BE CH DE FR GB IT LI NL
DOCDB simple family (publication)
EP 0058333 A1 19820825; EP 0058333 B1 19840620; BR 8200755 A 19821221; CA 1175064 A 19840925; DE 3105452 A1 19821021; DE 3260258 D1 19840726; DK 63082 A 19820815; IL 64986 A0 19820430; JP H0217536 B2 19900420; JP S57150652 A 19820917; US 4419297 A 19831206; ZA 82918 B 19821229
DOCDB simple family (application)
EP 82100697 A 19820202; BR 8200755 A 19820212; CA 396161 A 19820212; DE 3105452 A 19810214; DE 3260258 T 19820202; DK 63082 A 19820212; IL 6498682 A 19820211; JP 1902782 A 19820210; US 34090282 A 19820120; ZA 82918 A 19820212